Anchor post



C. J. MULLETT Feb. 3, 1931.

ANCHOR POST Filed Feb. 20. 1929 Y NVENTOR Chai/261B {(/u Zidi ATTORNEY l lPateiited Feb. 3, 1931 CHARLES J'. MULLETT, OF O'ITVIA, OHO

ANCI-IOR POST Application led February 2G, 1929.

soliditv of the ground and its anchoring property and one which may be manufactured economically, installed with minimum labor and provide a securely anchored base.

Means is provided for guiding the post during its entry into anchored position in the ground and the anchoring means provide for and facilitate the sinking of the post base in the earth by rotatory motion providing a screw type of downward feed eli'ective to sinh the end ofthe post to a desired extent without materially weakening the entered earth as an anchoring base.

The inivention consists in the structural features, arrangements and combinations hereinafter pointed out and claimed and is Illustrated in the accompanying diawings forming a part hereof and in which:

Figure l is a perspective of a post formed according to my invention.

Figure 2 is a View in elevation of the post positioned for insertion in a guiding bore in the earth preliminary to its rotated earth peneitatin movement to anchored position.

Figure 3 is a similar view of the post as rotated to anchored position, the helical path of the rotated cutting` and anchoring wings being indicated.

Figure l is a horizontal sectional view throughthe tubing looking down on theA cutting and anchoring wings.

My construction provides a post l of tubular metal formed at its base with lateral offset separated wings 2 and 3 at diametrically opposite sides of the post, these wings having sharply beveled forward cutting edges 4 and having their faces lying in the plane of a continuous helix containing said faces so that they present an earth entering portion 2 and a following portion 3 of Hat helix traversing the same helical path.

rl`his tubular post with its wings may be L L cast integrally busJ is preferably iormed and as shown is of malleable iron having its lower end split longitudinally in its diameter and to outturned and shaped, as by die pressing, to

Serial No. 341,438.

provide the wings 2 and 3, the forward or earth entering edges 4l of these wings or at least of the earth entering wing 2, being sharply beveled to provide a cutting edge.

The tubular metal post thus formed is provided with a depending centering plug 5 or wood or other material having` aii'external diamo er approximating the interna-l diameter of the tubing and inserted in its lower end to extend downwardly in the longitudinal axial line of the post.

fr ith a post thus arranged, a bore 6 approxmating the diameter' of the post tube is first de in the earth at the point of selected placement for the post. The centering plug :s is inserted Vin this bore and the post l is nch, and rotated. The sharp edge 3 of ie lowcrinost helix wing 2 will penetrate the l.

lical forni of the wing 2, as rotation of the ost is continued, will draw the lower end of 'lie postdownwardly in the bore 6, the upper helix wing 3 following in the path previously cut by the entering wing 2 until the post has )een rotated and screwed down by the helical wings to the desired depth.

Since both wings traverse a. common helical path cut in the earth, the latter is not broken up and its anchoring solidity is not materially affected. The centering plug guides the wings and serves to maintain them in the direction of earth penetration of the guiding bore 6' which may have a depth selected to coincide with the extent of earth penetration of the tubular post, with the plug 5 extending and forced into the earth beyond the lower end of a bore G to afford further anchorage. While the post is intended primarily for anchorage in an earth base, it is, in principle, operable with respect to other supporting bases penetrable by its wings as for example, concrete or cement prior to setting.

lith the plug 5 preceding the wings, a preformed bore will be presented whether or not the hole G is formed previous to the insertion of the plug or by its insertion. rlhe area to he penetrated by the helix wings is therefore restricted to the area bordering this bore. With the plug 5 having a diameter substantially coincident with the internal diameter of the cylinder l, which itself is of uniform diameter, the outer Walls of the latter on entering the preformed bore of slightly less diameter, will tend to force the Walls of the bore outwardly as the wings and the lower end of the cylinder enter the bore, thus com pacting the earth area bordering the bore and solidifying this area during the slicingly penetrative cutting action of the beveled edge i of the helix blade.

The form of the post as described and illustrated represents a preferred structural embodiment, but is intended as illustrative rather than restrictive' of the invention and may be modified to suit different conditions of manufacture and use in consonance with the spirit of the invention and the scope of the appended claims. 1

What Iclaim, therefore, and desire to secure by Letters Patent is:

l. A cylindrical tubular metal post of uniform diameter' having its lower end formed with opposed wings outstanding laterally from its periphery at its lower end in planes forming portions of a common helical path and having an axially alined cylindrical extension depending from its lower end and substantially coincident in diameter withthe internal diameter of the post.

2. A cylindrical tubular metalpost of uniform diameter having its lower end split in the line of its diameter and ontturned and shaped to provide a pair of opposed transverse earth slicing and post ancho-ring` wings outstanding laterally from its periphery at its lower end in planes forming portions of a common helical path centered on the axis of the tubular post, and a cylindrical centering plug seating in and dependingA from the lower end of said post having a diameter substantially coincident with the internal diameter thereof.

8. A post having a cylindrical tubular lower end -of uniform diameter split in the line of its diameter and outturned and shaped to provide a pair of opposed earth cutting and post anchoring wings outstanding laterally from its periphery at its lower end in planes forming portions of a common helical pat-h centering on the axis of the tubular lower end of the post, and a cylindrical centering extension depending from the lower end of said lower tubular end having a diam eter substantially coincident with the internal diameter of said tubular end.

4, A post comprising` a hollow metal cylinder of uniform diameter having opposed anchoring and earth slicing wings outstanding laterally from its periphery at its lower end with their upper and lower faces in planes forming portions of a common helical path and with the lowcrmost -of said wings pro vided with a beveled earth entering cutting edge,`and a cylindrical plug fitting in and depending from the lower end of said cylinder having a diameter substantially coincident with the internal diameter of said cylinder and causing the larger external diameter of the earth entering lower end of said cylinder to force outwardly and compact the earth in the area entered by said wings.

Signed at Leipsic, in the county of Putnam and State of Ohio this sixth day lof February,

CHARLES J. MULLETT. 

